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prime number

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

prime number Positive or negative integer, excluding one and zero, that has no factors other than itself or one. Examples are 2, 3, 5, 7, 11, 13, and 17. The integers 4, 6, 8, … are not prime numbers since they can be expressed as the product of two or more primes.

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prime numbers

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

prime numbers These are whole numbers that have only two factors ― the number itself and the number one. The only even prime number is two: all other prime numbers are odd. These are the prime numbers below 100.

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